alter



No. 625,|a3.

- s. muren a LA T vouna -FLAsH LIGHT APPARATUS..

(Apputmn med Dec. 2-1, 189s.)

(No Model.)

Patentd may'. la, |899.

'14 thereon.

In applying our invention to the dash-light apparatus shown in our former patent we may, when the ineandescing igniting device is used, adopt the construction shown in Fig. 3, .in which the platinum wire 13 is soldered directly to the ends of the conducting-wires and passes through openings in thepartition 12 of the boX and through like openings in a strip or disk 25 of asbestos-paper or'other heatresisting insulating material interposed between said partition and the metallic plate In'this case the exposed portion of the platinn m wire 13 is first covered with the inflammable insulating material 5 and they flash-powder is then poured upon the latter. In like mannergvhen a sparking device is used instead oi an incandescing igniter the terminals 16 and 170i' the sparking device are first lcovered with insulating material 5 and the powder is piled upon the latter, as shown in Fig. 4.

Having thus described our in venioir, we claim and desire to secure by Letters Patent- 1. The mode herein described of igniting flash-powder by an electricvcnrrent, said inodeeonsisting in first covering the exposed Inetallie portions of the igniting device with insulating material susceptible of being inflamed by the passage of the current through the igniter, then applying the flash-powder to said inflammable linsulating material so iliat `it is prevented by the latterfrom coming into contact with the metallic portions'of the igniter, and then passing a current through the igniter whereby the inflammable insulating material is first fired and in turn fires the dash-powder, substantial] y as specified.

2. A flash-light apparatus in which are com bined a mass of dash-powder, an electric igniting device embedded therein, and insulating material interposed between the igniting device and the Hash-powder and susceptible of being infiamed by the passage of the current through the igniter, said insulating material preventing thedirect access of the fiashpowder to the Aigniting device, and serving, when inflamed, to fire said flash-powder, substantially as specified. f

A flash-light cartridge eonsistingof a box or casing containing a mass of flash-powder,

and having embedded in the latter an electric i gnitin g device covered by insnlatin g material susceptible of being inflamed by the passage of the current throughthe igniter, and serving, when thus inflamed, to fire the Hash-powder, substantially as specified. l

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

SIMON D. ALTER. LEWIS lT. YOUNG. 

